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Fragrance

3,4-DIHYDRO-5-METHYLNAPHTHALENONE

CAS 6939-35-1
55

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A methylated dihydronaphthalenone used as a woody-musky fragrance ingredient. Sparse public safety data; aromatic ketone class flags some sensitization risk.

Function

PERFUMING

Skin benefits

  • Synthetic woody-musky fragrance
  • Used at very low percentages
  • Stable in formulations

Known concerns

  • Limited public cosmetic safety data
  • Aromatic ketone — possible sensitizer
  • IFRA may impose category limits

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.